Many useful links that you should visit.

[ThePhoenixBird]

L2j Wiki (the most important one!)
http://www.l2jserver.com/wiki/
http://www.l2jserver.com/wiki/How_to_write_a_Bug_Report
http://www.l2jserver.com/wiki/How_to_Apply_a_Patch

L2j Server Trac
http://trac.l2jserver.com/log/
http://trac.l2jserver.com/timeline/

L2j Datapack Trac
http://trac.l2jdp.com/log/
http://trac.l2jdp.com/timeline/

L2j-Geodata Project:
http://l2j-geodata.sourceforge.net/
http://l2j-geodata.svn.sourceforge.net/ ... j-geodata/